Add generic private grading delivery workflow / 增加通用私有阅卷交付流程

[yyuan308]

English

Summary

• Makes the live grade-homework skill course-neutral: all score allocations, partial-credit rules, and subject-specific decisions now come only from a frozen course package.
• Adds private roster validation, complete multi-page submission grouping, safe rendering manifests, grades.csv, review.csv, feedback records, and marked-page PNG/PDF output.
• Requires praise annotations for score-bearing work, deduction annotations for non-full leaves, and review annotations for uncertainty in production mode.
• Keeps Codex and Claude skill mirrors synchronized and records a reproducible v5.4 generic-delivery snapshot.

Validation

• 495 benchmark-core tests passed.
• 85 benchmark-physics compatibility tests passed.
• Snapshot, registry, privacy audit, mirror synchronization, and ignored-data checks passed.

Privacy and limits

• No roster, scan, answer, transcript, per-person grade, raw model output, or heldout data is included.
• This change is a delivery-contract and synthetic-test revision only. It makes no course-specific accuracy, production, or teacher-replacement claim.

Next steps

• Freeze a course-specific package with the course owner.
• Run an owner-approved private dry run and inspect marked pages plus review.csv.
• Obtain separate authorization before any model grading run or course-specific evaluation.

中文

内容

• 将 live grade-homework skill 改为通用流程：分值、部分分、学科规则只来自本次冻结的 course package。
• 增加私有 roster 校验、整份多页试卷聚合、安全渲染 manifest、grades.csv、review.csv、反馈记录和圈点 PNG/PDF。
• 生产模式要求：有得分的作答必须有表扬标注，非满分必须有扣分标注，不确定项必须有复核标注。
• 同步 Codex 与 Claude skill 镜像，并登记可复现的 v5.4 通用交付快照。

验证

• 495 项 benchmark-core 测试通过。
• 85 项 benchmark-physics 兼容测试通过。
• 快照、registry、隐私审计、镜像同步和忽略数据检查均通过。

隐私与限制

• 不包含 roster、扫描件、作答、转录、逐人分数、原始模型输出或 heldout 数据。
• 本 PR 只实现交付合同和合成测试，不宣称课程准确率、生产能力或教师替代能力。

下一步

• 与课程负责人冻结课程专属 package。
• 在私有环境进行经授权的 dry run，并检查圈点页面与 review.csv。
• 任何模型运行或课程专项评估都需要单独授权。